Control device



J. Al.. DE'BARBIERI .ET AL 25453571 CONTROL DEVICE Filed April 19, 194e [N VEN TQRS Josep/1 Lous 0e Barbieri.' mi

BY Edward Klis/mer Patented Nov. 9, 1948 CONTROL DEVICE Joseph Louis De Barbieri and Edward Kishner,

Brooklyn, N. Y.

Application April`19,.1946, Serial No. ,663,295`

"This invention relates to vcontrol -devices and more particularly to a control handle for guiding the flight of `model airplanes of the motordriven type. I I

Inmany instances it is desirable to control the flight of motor-driven model airplanes, `and means for accomplishing this is to `pre-set the rudder and causethe plane to maintain a circular path. Still additional control may :be had by providing means for operating the elevators so that the plane may be looped,` or the elevation altered at the will of the operator. To accomplish this, a lever arm adapted to operate the elevators, is installed inthe plane. Two control cords of sufficient length to allow flight at the desired elevation are then attached to the lever arm so that the plane Will `ascend or descend in accordance `with the particular cord that is pulled. The control handle for operating the cords Vpreferably consists of a 4barl orfs'tick from four to six inches long with the cords attached to each ends The operator then stands at the center of the proposed circle of flight and by'lrotating the stick about an axis perpendicular thereto `can control the height of the plane during flight. With this form of control the two cords leading from the plane to the operator must not become twisted because the added friction ioleims. (O1. 74-502) will prevent the transmission of movement from the stick to the control of the piane woumte exceedingly diicult, not onlyfrom the standpoint oi preventing entanglement of the control cords but also because the operating handle acts as a lever arm about its center and the adjustment is relatively coarse.

One ofthe objects of this invention is, therefore, to providey a control handle for guiding power-driven model airplanes in flight wherein exceedingly nc adjustmentof` the elevator control cords may be had. v p Another object is to provide a control handle for Vguiding model airplanes which will enable positive `control of the elevators4 even `though the control cords may become twisted.

Still another object of this invention is to overcome the necessity of maintaining a spaced relationship between the two control cords in order to simplify handling of the plane and reduce the wind resistance offered by them.

Other objects will become more apparent from the following description and drawings which illustrate, by way of example only, one form of the invention.

Figure l is a perspective View and illustrates `2 y the manner in which the control handle would be used in guiding a'model airplane in flight; V

Figure 2 is a side elevation of` one form of `control handle in accordance withthe invention; and Figure 3 is a perspective View `-of another form ofthe control handle. I

As previously mentioned, one method of iiying model airplanes isto Lpre--set the rudderf to cause the plane to maintain a predetermined circular path as illustrated in Figure 1. Two control cords I I, adapted to operate a suitable `lever arrangement (not shown) within the plane `I2 and in turn the elevators, are connectedtothe said lever and arelong enough to reach a point on the ground centrally located `with respect to the circle of flight. These cordsare attached to the control handle I3 so that either one or the other maybe actuatedand cause the planeto descend, ascend or yeven loop.

KOne form `of the invention is shown in Figure 2, and consists of an4 inverted J shaped member la having a hand grip 'I5 on the longer vertical leg I6. A bar I'I, is slidably mounted in holes in the two legs I6 and i8 and is essentially parallel to the horizontal section ofthe J member I4. Midwaybetween `the legs of member Ill, and rigidly fastened tothe bar I1, is` anoperating `lever or trigger I9 havingsuitable means on the upper end thereof for the attachment of the control cords l I. In the" form shown,` the upper section 2l),` of the trigger I9,` is threaded to receive two nuts 2l. Between these nuts is secured a short bar22 having a central hole adapted to `re` ceive the threaded portion 2B of the trigger I9. On the outer ends ofthe bar 22 are two smaller holes to which thecords II"are` secured. The cords passthrough a single hole in the legit and oneis secured directly to the forward hole in bar 22 whereas theremaining cord passes over a' small pulley 23, pivoted in the upper portion of leg I 6, and issecured in the rear hole of bar 22.

It is obvious from the above description that transportationof the bar Il forwardly will exert a pull on""the upper cord whereas a rearwardly movement would exert a pull on the lower cord. `In this form of the invention, similar springs 24 and 25are placed on the ends of the bar I1 outside of the J member I4. A nut 26, threadably attached to the forward end of bar I1 holds the front spring 24 in position, While a button 21, threadably secured to the rear end of bar IIl holds the rear spring 25 in place. Since the springs are evenly matched, the trigger I9 will maintain a` -iight the operator :would rst adjust the rest position of bar II to coincide with horizontal flight of the plane. This is accomplished by rotating the threaded nut 26 in one direction or the other in order to compress or relax spring 24. This operation would displace the trigger and bar assembly either forwardly or rearwardly and 'the degree of adjustment required would be determinedtby the action of the'plane. To operate or controly the"pla`ne, the operator would either pull the trigger I9 to the rear with his index fmger or displace the bar I'I forwardly by pressing Ion the button 21 with his thumb. The response of the plane to either of the above movements can be altered to suit the desir-e ofy the individualby merely interchanging the two control cords I I either inthe plane or as they `are attached to the control handle.

From the illustration in Figure 1, it` becomes` readily apparent that should the plane be looped, orv shouldthehanddle, be held in one position ee the P1e nereteteeebeetfit, the @elfde H Will be.- ceme twisted- Altheueii this twietiiig would render present typesvof handles completely inefective, a handleA in l.acordanerwith, this invention will continue to operat-e after many, twists areinr the. .c :orcls` Eurthermore, this new handle permita mlllch great@ eaeof@ Operaiol sin@ VCIY; fille adrllslimeiil ai?? available las Well as largey tepid eeiiietiileete, etieiild', theA 'eeeeeien anse.

Analternate form ofithe invention is shown in. 3, ariel ieiieritieel `te,-theiiiet ferm described except-th t prov' s for.. an alternate metile@ Q f .ereretiea- Springen ie pleeed.-ei1f-ti1lefeer-extention ef bei IN1 and is held inplaoe by a.nut3 2. A relatively 19ne- Srrine 3e peeitieeedee er the freetextension of bar II andin isE heldin place by emit e4 It, wiilybe neted that thetrieeei I9 tiefe' new been diepleeed'-ierwerdiy, eedthet.. the tim-mb atutdfblm?? hasebrenmtted: T0 Op' efa-vvthi hdlenth@ tflggr'is P1113@ t0 a Cen' tral, position and maintainedva't vthat point for horizontal flight. Controller. theJ planel in flight ieethee. eeeeieriieiiedfbr pulling-,the trigger ee- ,Y hen'to threar or permitting the for- 3;3lte.diepieeaitfeiwerdiri f eff this inreiitiee would aslshown. in Figure 3, but

w Ouldl be accomplishedby the act1on otfth'e'th mbralo'ne,`

ltlflough',l speciiic forms andd embodiments of this.' invention. are shown, itfisfapparent'that medirieetienendelteretifeiie "mier te mede by those skilledli' thealrt without departing from thej true scopeand spiritgof th'edi'sclosure. l `What is volairl'ried iszf A 1. A control handleforgluiding model planes in ilight by meansoft cords, and` comprising an inverted Jjfrarne.A having, a; hole in. each leg tne'reoft'and said holes being'V axially aligned; a bar lslidablydisposed in saidholes, a triggerseeiiied ,te Seid bei. iertieiiepertiee it te vvtiletrear.

ihisf instance a short the shorter leg of said frame having second hole to receive the control cords for guiding the plane, a pulley on the longer leg of the said frame and about which one of the said control cords pass, means on the said slid'able bar for securing the control cords, for the transmission of movement of the said bar to the said plane, and springs associated with the said bar to maintain said bar in a predetermined-n position.

2. A control handle forguiding model planes in night by means of cords, and comprising an inverted J frame having a hole in keach leg thereof` and said holes being axially aligned, a bar slidably disposed in said holes, a, trigger secured to said bar for transporting it to the rear, the shorter leg of said frame having a secdnd holerto receive the control cords for guiding the plane, a pulley on the longer leg of the said frame and about which one of the said control cords pass, means on the said slidable bar for directly-seeming tilet-eentrel cords.l thereto, for thetretlemieeien 0i,I movement of the Saidbar tel thel Seid plane, springs eeweietedwith saisi bar to oppose the movement thereof, anda thumb operetedrbutten, Qn, the rear enti-effetti@ bar; fer QFWaisdl-y: displacllgusramf v 3- eeeritrel handle ferfeiiidine model Blame in fil-ight bye-means of control cords, andfcomprising an inverted JV, vframe havingN arholeV irreach leg thereof andsaidjholes being` axially aligned, akbar slidably disposed in` said holes, as econd hole in the shorter-lego; the said, frame to reeeiveI the control eerdelfer v guiding, the planeY .a pulley ori-the longer leg,` on the, sraidjfrarne, and about which oneof the control cords pass, means onsaidbar for securing the saidcor ds yfor means -l mitting motion/of thesaid bar tothe-said plane, a` thumb operated'fbutton on the rear end'ot said bar for the forwardgdisplacement thereof, and spijingvsfyzirlmaintaining said bar in a predetermined petition 4'. A` control. handle/for guiding,model5 planes inf-light, o ornprisingy a frame, a hand grip thereon, an horizontal barv slidably maintained inA said frame, a spring at eachendfof said bar to resist longitudinal'. displacement thereo, a trigger in termediate the,ends ,of` said bar lfor',4 actuating samelongitudinally against theresistance vo f one eisaidfeprinse, a bei? Carried by seid triggery and a control cordattache'd to eachendof the lastl-` inentionedbar and to the plane.V

JQSEPHA LOUIS, DE BARBIE-e1. EDWARD REFERENons errno.

The ieiiewies; refeteeees are ofI record infthe figlie; of', thii; paff'nij.

UNITED STATES PATENTS Number y 

